| 基金项目： | Supported by the National Natural Science Foundation of China.Acknowledgements The authors thank the anonymous referee for helpful and useful comments. The SOHO/LASCO data used here are produced by a consortium of the Naval Research Laboratory （USA）, Max-Planck-Institut fuer Aeronomie （Germany）, Laboratoire d＇Astronomie （France） and the University of Birmingham （UK）. SOHO is a project of international cooperation between ESA and NASA. The LASCO CME catalog is generated and maintained at the CDAW Data Center by NASA and The Catholic University of America in cooperation with the Naval Research Laboratory. Flare index data used in this study were calculated by T. Atac and A. Ozguc from Bogazici University＇s Kandilli Observatory, Istanbul, Turkey. The solar flare listing used in this study was prepared by NGDC in cooperation with the Department d＇Astronomie Solaire et Planetaire, Observatoire deParis, 92190 Meudon, France. The authors would like to express their deep thanks to these staff. The work is supported by the National Natural Science Foundation of China （Grant Nos. 11147125, 10873032, 10921303, 11073010 and 406360310）, the National Basic Research Program of China （973 program, 2011CB811406）, the Chinese Academy of Sciences and the Foundation of the Key Laboratory of Solar Activity of National Astronomical Observatories of Chinese Academy of Sciences （KLSA2011-03）. |
